The fourth national standard of the hottest intern

2022-08-13
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The quality of supporting parts is the key to the implementation of the national four standards of internal combustion engines on New Year's Day 2015

the national four standards of internal combustion engines will be officially implemented on January 1 next year. The quality problem of supporting parts with the national four engines will become var CPRO_ id = "u"; It is the key to ensure the normal operation of the national fourth diesel engine. The fourth national standard of internal combustion engine will be officially implemented on January 1 next year. At present, the internal combustion engine with the third national standard has gradually withdrawn from the market. At the same time, the quality of the parts and components matching the national fourth engine will become the key to whether the national fourth diesel engine can work normally

recently, at the 2014 International Symposium on internal combustion engine reliability technology hosted by the automotive engine branch of the China Association of automobile manufacturers, ye Shengji, Deputy Secretary General of the China Association of automobile manufacturers, proposed this phenomenon. He believed that the low reliability of internal combustion engine products in China was the main reason why products lingered in the low-end market

for the national fourth diesel engine with more stringent technical requirements, its requirements for supporting parts are also higher, especially in terms of its reliability. This has brought new challenges to internal combustion engine parts and components. Standardizing various technical regulations, adopting general and mature technical routes, and improving relevant industry standards to promote the reliability of internal combustion engines have become issues of concern in the industry

upgrading the fourth country is a challenge

the implementation of the fourth country has brought new challenges to internal combustion engine parts enterprises. Lu Zhuohua, deputy general manager of Dongfeng Cummins Engine Co., Ltd., said that energy conservation and emission reduction require improving the combustion efficiency, cylinder pressure, thermal load and injection pressure of the engine, which are challenges to the reliability of the internal combustion engine. It requires the internal combustion engine to greatly improve the application of new materials, the resistance of parts and components, high mechanical load, thermal load and friction and wear capacity in the process of R & D

1. Users are not allowed to repair or open the machine body by themselves. The original accessories should be used as much as possible for the replacement of internal cable parts

the implementation of the Fourth National Congress not only has more technical requirements in the research and development of internal combustion engines, but also puts forward higher standards in the process of production and manufacturing, and has higher and higher requirements for processing technology, processing accuracy and so on. At this stage, China is facing the characteristics of late start of diesel engine emission post-treatment research and fast upgrading of emission standards, while reliability research requires a lot of basic data, measured feedback and improvement. In the short term, it will complete R & D, reliability research, batch production process development and rapid capacity improvement, which is undoubtedly a great challenge to domestic post-treatment enterprises

it is understood that enterprises such as Weichai, Yuchai, Xichai and Dongfeng commercial vehicles have actively explored the application of reliability technology and gained valuable practical experience; Domestic and foreign scientific research institutions and colleges and universities, this kind of experimental machine for the reliability of internal combustion engine is the "ancestor" of the experimental machine family. The basic research is increasingly in-depth and has achieved many phased results, which have played a great role in promoting the research and application of reliability technology in the internal combustion engine industry

the core components of the engine have the characteristics of high reliability, strong durability and high precision. The engine main engine factory will consider the supplier's historical experience, R & D and innovation ability, production assurance ability, quality assurance ability, cost control ability, financial status and other factors to designate suppliers. Before the parts are used in engine manufacturing in batches, they need to go through many links, such as manual samples, performance tests, tooling samples, bench tests, environmental tests, vehicle road tests, and small batch and mass production. It usually takes about two years, and its development and verification process requires a lot of manpower and capital costs. Therefore, the remarkable characteristics of the industry are: the fixed-point selection of suppliers is very cautious, and the cooperative relationship between parts suppliers and engine manufacturers will be relatively stable once it is determined

at present, in the domestic market, some engine parts with low technology content, low added value and high transportation cost have basically achieved localization; However, for the core engine components such as hydraulic tappet, hydraulic tensioner, rocker arm and variable valve system, well-known automobile host manufacturers generally adopt the principle of cautious localization in order to ensure the successful development and reliable quality of products. With the improvement of product quality and technical level of domestic enterprises, they gradually began to purchase from domestic enterprises

remanufacture of internal combustion engines has become a hot spot

compared with previous engines, the cost of Guosi diesel engines is higher and the technology is more advanced. Therefore, the value of remanufacture of Guosi diesel engines is higher. Not long ago, the China internal combustion engine industry association held a working conference on the promotion of the internal combustion engine remanufacture promotion plan. Representatives of the economic and information technology commissions of more than 20 provinces and cities attended the meeting. According to the promotion plan, by the end of the 12th Five Year Plan, the remanufacturing production capacity, enterprise scale and technical equipment level of the internal combustion engine industry will be significantly improved, and 350000 sets of complete internal combustion engine remanufacturing production capacity will be formed in the whole industry

internal combustion engine remanufacturing refers to the centralized disassembly, parts cleaning, detection and classification of the failed internal combustion engine, and after reprocessing and manufacturing through a certain process according to the requirements of the original new product technical specifications, 2 The accuracy of the testing machine should be ± 1%, so that the service life of the remanufactured internal combustion engine products and its power, economy, environmental protection, reliability and other indicators are not lower than the standard requirements of the prototype new machine

it is understood that compared with the traditional waste metal recycling and disposal method, remanufacture can recover about 70% of the added value contained in scrap products; Compared with the original manufacturing, remanufacturing can save energy consumption by 80%, save materials by more than 70%, and reduce manufacturing costs by 30% - 50%; The remanufacture of internal combustion engine can not only reduce waste and achieve considerable environmental benefits, but also save energy and materials, and the economic and social benefits are also very significant

Yang Tiesheng, deputy director of the Department of energy conservation and comprehensive utilization of the Ministry of industry and information technology, said that after years of accumulation, China has entered the peak period of scrapping of mechanical and electrical products. If we stick to the traditional production and consumption mode of mass production, mass consumption and mass abandonment, and do not realize the recycling of waste products, resources, energy and environment will be unsustainable. This requires us to seek a sustainable mode of production and consumption, speed up the promotion of industrial circular development, in order to break the constraints of energy resources and alleviate the pressure on the ecological environment

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